General

  • Target

    http://google.com]

  • Sample

    240418-w4ww2abd88

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Microsoft\OneNote\16.0\cache\_R_E_A_D___T_H_I_S___NFYMX_.txt

Family

cerber

Ransom Note
Hi, I'am CRBR ENCRYPTOR ;) ----- ALL YOUR DOCUMENTS, PH0T0S, DATABASES AND OTHER IMPORTANT FILES HAVE BEEN ENCRYPTED! ----- The only one way to decrypt your files is to receive the private key and decryption program. To receive the private key and decryption program go to any decrypted folder, inside there is the special file (*_R_E_A_D___T_H_I_S_*) with complete instructions how to decrypt your files. If you cannot find any (*_R_E_A_D___T_H_I_S_*) file at your PC, follow the instructions below: ----- 1. Download "Tor Browser" from https://www.torproject.org/ and install it. 2. In the "Tor Browser" open your personal page here: http://xpcx6erilkjced3j.onion/4FB5-3DE8-C204-0098-BA7A Note! This page is available via "Tor Browser" only. ----- Also you can use temporary addresses on your personal page without using "Tor Browser". ----- 1. http://xpcx6erilkjced3j.1n5mod.top/4FB5-3DE8-C204-0098-BA7A 2. http://xpcx6erilkjced3j.19kdeh.top/4FB5-3DE8-C204-0098-BA7A 3. http://xpcx6erilkjced3j.1mpsnr.top/4FB5-3DE8-C204-0098-BA7A 4. http://xpcx6erilkjced3j.18ey8e.top/4FB5-3DE8-C204-0098-BA7A 5. http://xpcx6erilkjced3j.17gcun.top/4FB5-3DE8-C204-0098-BA7A ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://xpcx6erilkjced3j.onion/4FB5-3DE8-C204-0098-BA7A

http://xpcx6erilkjced3j.1n5mod.top/4FB5-3DE8-C204-0098-BA7A

http://xpcx6erilkjced3j.19kdeh.top/4FB5-3DE8-C204-0098-BA7A

http://xpcx6erilkjced3j.1mpsnr.top/4FB5-3DE8-C204-0098-BA7A

http://xpcx6erilkjced3j.18ey8e.top/4FB5-3DE8-C204-0098-BA7A

http://xpcx6erilkjced3j.17gcun.top/4FB5-3DE8-C204-0098-BA7A

Extracted

Path

C:\Program Files\7-Zip\DECRYPT_YOUR_FILES.HTML

Ransom Note
<html> <head> <style> body{ background-color: #3366CC; } h1 { background-color: RGB(249, 201, 16); } p { background-color: maroon; color: white; } </style> </head> <body> <center> <h1><b> Attention ! All your files </b> have been encrypted. </h1></br> <p> Due encrypting was used algoritm RSA-4096 and AES-256, used for protection military secrets.</br> That means > RESTORE YOU DATA POSIBLE ONLY BUYING decryption passwords from us.</br> Getting a decryption of your files is - SIMPLY task.</br></br> That all what you need:</br> 1. Sent Your ID_KEY on mailbox [email protected] or [email protected] </br> 2. For test, decrypt 2 small files, to be sure that we can decrypt you files.</br> 3. Pay our services. </br> 4. GET software with passwords for decrypt you files.</br> 5. Make measures to prevent this type situations again.</br></br> IMPORTANT(1)</br> Do not try restore files without our help, this is useless, and can destroy you data permanetly.</br></br> IMPORTANT(2) </br> We Cant hold you decryption passwords forever. </br>ALL DECRYPTION PASSWORDS, for what wasn`t we receive reward, will destroy after week of moment of encryption. </p> <p> Your ID_KEY: <br> </p> <table width="1024" border="0"> <tbody> <tr> <td><p>pgelvPMcPSmzNwTNkYSf9+A5uLAg6JmJK6ArvKgGvx3ABEYrSis/CndZWnaUv8RwCq4T6fpWtz6T8wW2t2itShD5AdCEnDlj0rNWpZhNYgeWcy5FYVJpvSsfFCYDn+AmHsxneJmhjZTrdtNj9omgQYcmmy6V8We46peKvWjFDcCmBl4snqhvwZgw5CtO5vFQlNCiNPTopMN4v+Drt6+ooEntpMbkPAWdIUEy/oLxqMBiF1HuE18Ii5uszIKMYQRZ3i342Ox5kY2GzQaxWE8orenj8mvFi2LUFcy9bIRAYR7c3XUTYmJdoOAPC0xjQ5Ci/UurJxCh9oqwq+FWS25yHw==ZW4tVVM=</p></td> </tr> </tbody> </table> </center></html></body>

Targets

    • BadRabbit

      Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.

    • Cerber

      Cerber is a widely used ransomware-as-a-service (RaaS), first seen in 2017.

    • Fantom

      Ransomware which hides encryption process behind fake Windows Update screen.

    • Mimikatz

      mimikatz is an open source tool to dump credentials on Windows.

    • Modifies WinLogon for persistence

    • Renames multiple (1007) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • mimikatz is an open source tool to dump credentials on Windows

    • Contacts a large (1117) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Disables Task Manager via registry modification

    • Modifies Windows Firewall

    • Drops startup file

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Adds Run key to start application

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks